Finding the Fourth Proportional to 5,026.30, 7,538.62 and 1,328.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,026.30 : 7,538.62 = 1,328.75 : x
2. Step 2: Convert to fraction form
   5,026.30/7,538.62 = 1,328.75/x
3. Step 3: Cross multiply
   5,026.30x = 7,538.62 × 1,328.75
4. Step 4: Simplify right side
   5,026.30x = 10,016,973.48
5. Step 5: Solve for x
   x = 10,016,973.48/5,026.30
6. Step 6: Final answer
   x = 1,992.91